没有be worth to be done的说法,只有be worth doing和be worthy to be done的说法。worth是介系词,后面只能跟动名词的主动形式,但表示被动的意义。
短语前置词一个或两个简单介词和一个或几个其他词类构成一个短语,作用相当于一个介词,这就叫做短语介词。这类介词的末尾总是一个简单介词。如 according to,because of,by means of,in addition to,in front of, in spite of,into等。
简单前置词包括in,on,with,by,for,at,about,under,of,to等。(to为介词,意为“习惯(做)……”,后接名词,代词或动名词形式)。
合成前置词包括into,within,throughout,inside,outside,without等由两个单词组成的介词。
重叠前置词包括from among 从...当中from behind 从...后面,until after 直至...之后,at about 在大约...,after about 在大约...之后等。
没有be worth to be done的说法,只有be worth doing和be worthy to be done的说法。
worth是介系词,后面只能跟动名词的主动形式,但表示被动的意义,如:
The book is worth reading.
If something is worth doing, it's worth doing well.
worthy是形容词,这个词的后面要跟介系词of,of之后才要跟动名词的被动式,或者直接跟动名词的被动式。如:
The book is worthy of being read.
If something is worthy to be done, it's worthy to be done well.
另外,还有一个字叫做worthwhile,也是形容词,它可以作表语,后面可以用动词不定式和动名词,作其真正的主语:
It's worthwhile to read the book.
If it's worthwhile doing something, it's worthwhile doing it well.